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May 21, 2018

A Scale Model of the Earth if the Earth was the Size of a Basketball as of 2018-05-20



A Scale Model of the Earth if the Earth was the Size of a Basketball - Radius 12.0275 CM(4.73523622 inches)


Top of the Troposphere--0.038cm (0.015inches) 0.001 Ft
Top of the Stratosphere--0.113cm (0.045inches) 0.004 Ft
Top of themesosphere--0.227cm (0.089inches) 0.007 Ft
STS-1(Perigee)--0.453cm (0.178inches) 0.015 Ft
STS-1(apogee)--0.474cm (0.187inches) 0.016 Ft
ISS(Perigee)--0.757cm (0.298inches) 0.025 Ft
ISS(apogee)--0.770cm (0.303inches) 0.025 Ft
Top of Thermosphere. 1.133cm (0.446inches) 0.037 Ft



The 50  closest  observed  NEO Earth close approaches as of  2018-05-20


01. The 2011-Feb-04 fly by of 2011 CQ1--10.347cm (4.074inches) 0.339 Ft
02. The 2008-Oct-09 fly by of 2008 TS26--11.816cm (4.652inches) 0.388 Ft
03. The 2004-Mar-31 fly by of 2004 FU162--12.351cm (4.862inches) 0.405 Ft
04. The 2016-Feb-25 fly by of 2016 DY30--14.978cm (5.897inches) 0.491 Ft
05. The 2017-Apr-04 fly by of 2017 GM--18.681cm (7.355inches) 0.613 Ft
06. The 2017-Oct-20 fly by of 2017 UJ2--21.756cm (8.565inches) 0.714 Ft
07. The 2011-Jun-27 fly by of 2011 MD--23.184cm (9.127inches) 0.761 Ft
08. The 2014-Jun-03 fly by of 2014 LY21--25.810cm (10.161inches) 0.847 Ft
09. The 2009-Nov-06 fly by of 2009 VA--26.590cm (10.469inches) 0.872 Ft
10. The 2012-May-29 fly by of 2012 KT42--27.263cm (10.734inches) 0.894 Ft
11. The 2017-Mar-02 fly by of 2017 EA--27.420cm (10.795inches) 0.900 Ft
12. The 2016-Sep-11 fly by of 2016 RN41--32.749cm (12.893inches) 1.074 Ft
13. The 2015-Sep-22 fly by of 2015 SK7--38.208cm (15.043inches) 1.254 Ft
14. The 2016-Jan-12 fly by of 2016 AH164--38.293cm (15.076inches) 1.256 Ft
15. The 2013-Dec-23 fly by of 2013 YB--39.225cm (15.443inches) 1.287 Ft
16. The 2017-Nov-26 fly by of 2017 WE30--44.815cm (17.644inches) 1.470 Ft
17. The 2016-Mar-11 fly by of 2016 EF195--47.677cm (18.771inches) 1.564 Ft
18. The 2008-Oct-20 fly by of 2008 US--50.052cm (19.705inches) 1.642 Ft
19. The 2004-Dec-19 fly by of 2004 YD5--51.949cm (20.452inches) 1.704 Ft
20. The 2013-Feb-15 fly by of 367943 Duende (2012 DA14)--52.259cm (20.574inches) 1.715 Ft
21. The 2015-Nov-15 fly by of 2015 VY105--53.303cm (20.985inches) 1.749 Ft
22. The 2016-Jan-14 fly by of 2016 AN164--57.900cm (22.795inches) 1.900 Ft
23. The 2010-Nov-17 fly by of 2010 WA--61.321cm (24.142inches) 2.012 Ft
24. The 2018-Jan-18 fly by of 2018 BD--61.859cm (24.354inches) 2.030 Ft
25. The 2015-Feb-17 fly by of 2015 DD1--62.075cm (24.439inches) 2.037 Ft
26. The 2014-Sep-07 fly by of 2014 RC--63.313cm (24.927inches) 2.077 Ft
27. The 2011-Feb-06 fly by of 2011 CF22--63.839cm (25.134inches) 2.094 Ft
28. The 2016-Sep-07 fly by of 2016 RB1--64.398cm (25.354inches) 2.113 Ft



Geosynchronous orbit--67.559cm (26.598inches) 2.216 Ft



29. The 2008-Nov-03 fly by of 2008 VM--75.248cm (29.625inches) 2.469 Ft
30. The 2004-Mar-18 fly by of 2004 FH--80.665cm (31.758inches) 2.646 Ft
31. The 2017-Oct-12 fly by of 2012 TC4--82.650cm (32.540inches) 2.712 Ft
32. The 2010-Oct-12 fly by of 2010 TD54--85.742cm (33.757inches) 2.813 Ft
33. The 2017-Jan-30 fly by of 2017 BH30--85.850cm (33.799inches) 2.817 Ft
34. The 2010-Nov-30 fly by of 2010 XB--87.847cm (34.586inches) 2.882 Ft
35. The 2013-Apr-18 fly by of 2013 HT25--89.662cm (35.300inches) 2.942 Ft
36. The 2017-May-04 fly by of 2017 JB2--93.008cm (36.617inches) 3.051 Ft
37. The 2014-Aug-31 fly by of 2014 RA--95.026cm (37.412inches) 3.118 Ft
38. The 2016-Apr-04 fly by of 2016 GN134--95.974cm (37.785inches) 3.149 Ft
39. The 2012-May-28 fly by of 2012 KP24--96.122cm (37.843inches) 3.154 Ft
40. The 2015-Apr-21 fly by of 2015 HD1--99.566cm (39.199inches) 3.267 Ft
41. The 2017-Oct-28 fly by of 2017 UL6--100.460cm (39.551inches) 3.296 Ft
42. The 2014-Mar-06 fly by of 2014 EC--104.224cm (41.033inches) 3.419 Ft
43. The 2009-Feb-27 fly by of 2009 EJ1--104.330cm (41.075inches) 3.423 Ft
44. The 2017-Aug-14 fly by of 2017 QP1--106.229cm (41.823inches) 3.485 Ft
45. The 2017-Mar-20 fly by of 2017 FN1--107.355cm (42.266inches) 3.522 Ft
46. The 2012-Mar-26 fly by of 2012 FS35--109.577cm (43.140inches) 3.595 Ft
47. The 2012-Jan-27 fly by of 2012 BX34--111.432cm (43.871inches) 3.656 Ft
48. The 2008-Mar-10 fly by of 2008 EF32--112.584cm (44.324inches) 3.694 Ft
49. The 2009-Oct-01 fly by of 2009 TB--119.071cm (46.878inches) 3.907 Ft
50. The 2007-Oct-17 fly by of 2007 UN12--119.600cm (47.087inches) 3.924 Ft


Light-second. 566.000cm (222.820inches) 18.568 Ft
Lunar distance (perigee)--673.000cm (265.000inches) 22.095 Ft
Lunar distance--714.000cm (281.000inches) 23.414 Ft
Lunar distance (apogee)--766.000cm (302.000inches) 25.128 Ft
Light-minute--34000.000cm (13400.000inches) 1114.101 Ft

Moon Equatorial radius--3.280cm (1.292inches) 0.108 Ft
Moon Equatorial radius Diameter--6.560cm (2.584inches) 0.215 Ft
Moon Equatorial  Circumference--20.600cm (8.117inches) 0.676 Ft

Earth radius--12.000cm (4.735inches) 0.395 Ft
Earth (Equatorial) diameter--24.100cm (9.470inches) 0.789 Ft
Earth (Equatorial) Circumference--75.600cm (29.752inches) 2.479 Ft


See the spreadsheet  The 50 closest observed NEO Earth close approaches as of 2018-05-20.xlsx






May 11, 2018

The NEO 2010 WC9 on 2018-05-10

The NEO 2010 WC9 on 2018-05-10 from Mayhill, New Mexico [New Mexico Skies](MPC Code H06)
 a stack of 13-60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley
The NEO 2010 WC9 on 2018-05-10 from Mayhill, New Mexico [New Mexico Skies](MPC Code H06)
 a stack of 13-60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley
The NEO 2010 WC9 on 2018-05-10 from Mayhill, New Mexico [New Mexico Skies](MPC Code H06)
 a stack of 13-60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley

If the  Earth was the Size of a basketball the flyby of the asteroid 2010 WC9  would be ~3.7 Meters(~12.2 feet) away. https://goo.gl/3SXrMg

Apr 26, 2018

Confirmation Images of the NEO 2018 HH2

The NEO 2018 HH2( ZH0A971) on 2018-04-24
from Sierra Remote Observatory, Auberry, California, USA (MPC U69)
a stack of 15 - 15 Second Luminance BIN2 images
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD)
 By Steven M. Tilley
The NEO 2018 HH2( ZH0A971) on 2018-04-24
from Sierra Remote Observatory, Auberry, California, USA (MPC U69)
a stack of 15 - 15 Second Luminance BIN2 images
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD)
 By Steven M. Tilley
The NEO 2018 HH2( ZH0A971) on 2018-04-24
from Sierra Remote Observatory, Auberry, California, USA (MPC U69)
a stack of 15 - 15 Second Luminance BIN2 images
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD)
 By Steven M. Tilley


See: MPEC 2018-H89 : 2018 HH2

Apr 23, 2018

Confirmation images of the NEO 2018 HC1

A confirmation image of the NEO 2018 HC1 on
2018-04-21 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15 - 05 Second Luminance BIN2
images taken with iTelescope.net's
(T30 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley
A confirmation image of the NEO 2018 HC1 on
2018-04-21 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15 - 05 Second Luminance BIN2
images taken with iTelescope.net's
(T30 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley
A confirmation image of the NEO 2018 HC1 on
2018-04-21 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15 - 05 Second Luminance BIN2
images taken with iTelescope.net's
(T30 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley

Apr 6, 2018

The NEO 2018 BY2 - Information Sheet

The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance 
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)

By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images 
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD) 
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD) By Steven M. Tilley
The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
 Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley
 Background
(as of 2018-04-06)
  • Object: 2018 BY2
  • Orbit Type: Apollo [NEO, PHA]
  • Approximate Diameter: 210 m - 470 m ( 688.976  feet to 1541.995  feet) (Absolute Magnitude: H= 20.5)
  • On the Sentry Risk Table: NO
  • On the NEODyS CLOMON2 risk page: NO 
  • First(Precovery) Observation was made: 2018 01 03.45659
  • Discovery observation was made on: 2018 01 17.31782
  • Discovery observation was made by Pan-STARRS 1, Haleakala (MPC Code F51) The Discovery M.P.E.C.:MPEC 2018-B85 : 2018 BY2
  • Last Observation (publish): 2018 04 05.42579 (at iTelescope Observatory, Siding Spring,  Australia (MPC Code Q62) )
  • Data-Arc Span (publish):  days 92
  • Number of Optical Observations(published):146
  • Observatories Reporting (Published) Observations(MPC Code):
    • (246) Klet Observatory-KLENOT, Czech Republic.
    • (474) Mount John Observatory, Lake Tekapo, New Zealand. 
    • (568) Mauna Kea, US/Hawaii. 
    • (587) Sormano, Italy. 
    • (691) Steward Observatory, Kitt Peak - Spacewatch, US/Arizona.
    • (703) Catalina Sky Survey, US/Arizona.
    • (711) McDonald Observatory, Fort Davis,US/Texas.
    • (807) Cerro Tololo Observatory, La Serena,  Chile.
    • (A48) Povegliano Veronese, Italy.
    • (B74) Santa Maria de Montmagastrell, Spain.
    • (F51) Pan-STARRS 1, Haleakala,US/Hawaii.
    • (H01) Magdalena Ridge Observatory, Socorro, US/New Mexico. 
    • (H06) iTelescope Observatory, Mayhill, US/New Mexico.
    • (H21) Astronomical Research Observatory, Westfield, US/Illinois.
    • (H36) Sandlot Observatory, Scranton, US/Kansas.
    • (H45) Arkansas Sky Obs., Petit Jean Mountain South, US/Arkansas.
    • (I52) Steward Observatory, Mt. Lemmon Station,US/Arizona.
    • (K61) Rokycany Observatory, Czech Republic.
    • (L04) ROASTERR-1 Observatory, Cluj-Napoca, Romania.
    • (Q62) iTelescope Observatory, Siding Spring, Australia/NSW.
    • (T05) ATLAS-HKO, Haleakala, US/Hawaii.
    • (U69) iTelescope SRO Observatory, Auberry,
    • (W89) Cerro Tololo-LCO Aqawan A #1, Chile.
  • Perihelion Distance 1.014723117954455 (AU)
  • Aphelion Distance: 2.264719569328387 (AU)
  • Earth MOID (Earth center to NEO center): 0.04159 AU ((16.186 LD)), ( 975.57 Earth radii) or 3,866,032.024  miles ( 6,221,775.442 ( KM))
  • Next Close-Approach to Earth:  Will safely pass Earth on 2018-Apr-11:
    • Minimum Distance(Earth center to NEO center) of  0.0609381959952516 (AU) ( 23.715 (LD)), 1429.89 (Earth radii) or  5,664,559.202  miles ( 9,116,224.365(KM)) 
    • Nominal Distance(Earth center to NEO center) of 0.0609437887594874 (AU) ( 23.718 (LD)), (1430.02  Earth radii) or 5,665,079.082 miles ( 9,117,061.03 (KM))
    • Maximum Distance(Earth center to NEO center) of  0.0609493815227982 (AU) ( 23.72 (LD)), (1430.156443 Earth radii) or 5,665,598.962 miles (9,117,897.696 (KM))   

Mar 19, 2018

Confirmation of the NEO 2018 FC1

The NEOCP object ZF278E4(now the NEO 2018 FC1) on 2018-03-19
a stack of 20-30 second luminance BIN2 images taken with
 
iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
 at Siding Spring Observatory, Coonabarabran, NSW, Australia
(MPC code Q62) 

By Steven M. Tilley
The NEOCP object ZF278E4(now the NEO 2018 FC1) on 2018-03-19
a stack of 20-30 second luminance BIN2 images taken with
 
iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
 at Siding Spring Observatory, Coonabarabran, NSW, Australia
(MPC code Q62) 

By Steven M. Tilley
The NEOCP object ZF278E4(now the NEO 2018 FC1) on 2018-03-19
a stack of 20-30 second luminance BIN2 images taken with
 
iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
 at Siding Spring Observatory, Coonabarabran, NSW, Australia
(MPC code Q62) 

By Steven M. Tilley
 Background
(as of 2018-02-19)
  • Object: 2018 FC1
  • Orbit Type: Amor [NEO]
  • Approximate Diameter: 120 m - 260 m (393.701 feet to 853.018 feet) (Absolute Magnitude: H= 21.766)
  • On the Sentry Risk Table: NO
  • On the NEODyS CLOMON2 risk page: NO 
  • Discovery observation was made on: 2018 03 17.33572
  • Discovery observation was made by Catalina Sky Survey (MPC Code 703) The Discovery M.P.E.C.:MPEC 2018-F40 : 2018 FC1
  • Last Observation (publish): 2018 03 19.53148 (at iTelescope Observatory, Siding Spring,  Australia (MPC Code Q62) )
  • Data-Arc Span (publish): 2 days 
  • Number of Optical Observations(published):42
  • Observatories Reporting (Published) Observations(MPC Code):
    • (033) Karl Schwarzschild Observatory, Tautenburg, Germany.
    • (474) Mount John Observatory, Lake Tekapo, New Zealand.
    • (703) Catalina Sky Survey, US/Arizona.
    • (734) Farpoint Observatory, Eskridge, US/Kansas.
    • (807) Cerro Tololo Observatory, La Serena, Chile.
    • (E23) Arcadia, Australia/NSW.
    • (I52) Steward Observatory, Mt. Lemmon Station, US/Arizona.
    • (Q62) iTelescope Observatory, Siding Spring,  Australia/NSW. 
  • Perihelion Distance:1.106589693409455(AU)
  • Aphelion Distance: 2.130212399099761(AU)
  • Earth MOID (Earth center to NEO center): 0.19123 AU (( 74.421 LD)), (4490.28 Earth radii) or  17775939 miles (  (28607600 KM))
  • Next Close-Approach to Earth:  Will safely pass Earth on 2018-Mar-30 at a 
    • Minimum Distance(Earth center to NEO center) of 0.192881774004264 (AU) (75.064 (LD)), (4,516.07 Earth radii) or  17,878,004 miles ( (28,854,702 KM)) 
    • Nominal Distance(Earth center to NEO center) of 0.196815739374881(AU) ( 76.595 (LD)), ( 4,621.44 Earth radii) or 18,295,166 miles (29,443,216 (KM))
    • Maximum Distance(Earth center to NEO center) of 0.20074975749401 (AU) ( 78.126 (LD)), ( 4,713.82 Earth radii) or  18,660,856 miles (30,031,736 (KM))